Alt-BEAM Archive

Message #11918



To: beam@sgiblab.sgi.com
From: walkau walkau@eagle.ca
Date: Wed, 15 Mar 2000 18:39:38 -0500
Subject: [alt-beam] walker motor gear ratio


a friend of mine mentioned that he has some motors with a built in gear
reduction ratio of 300:1. (voltages 1.5 to 12v)

i was wondering if they would be useful for the BEAM walkers?

thanks for any insight.

niels



11919 Wed, 15 Mar 2000 14:57:31 -0800 (PST) [alt-beam] Re: Photodiodes beam@sgiblab.sgi.com Daniel Grace IR emitters? Used as Photodiodes? I never knew this.
How well do they work?

~Daniel

--- Richard Caudle wrote:
> You can use IR emitters, too. Craig Maynard's
> SolarFly uses them for eyes.
> I've got an HPV that uses them, too.
>
> Richard
>
>

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11920 Wed, 15 Mar 2000 18:11:02 EST [alt-beam] Re: Once more, a reminder for the Lego MotorsMini beam@sgiblab.sgi.com BUDSCOTT@aol.com The U.S. part ain't a problem, and i can stand shipping but sheesh, $11.00
that is a bit pricy, but i suppose thats the price you pay for a good bot! Do
they have any other models that are cheaper? Size doesn't matter too much to
me, i just like to find some kind of servol or motor that is consistant and
"price efficient" (I can only go without eating for so long!) ThAnKs! I like
your .giff, lots smaller than any .mov or .ram!

-Spencer



11921 Wed, 15 Mar 2000 15:37:45 -0800 (PST) [alt-beam] Dissapointment!!!! BEAM List Daniel Grace Well, my mom finally found the rotating suckers for
me. But they are a major dissapointment. They're
geared with worm gears at a 90 degree angle, and they
pull over 200mA @ 1.5V (200 is the max that my meter
measures, and it's overload!)

~Daniel

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11922 Thursday, March 16, 2000 9:31 AM Re: Photodiodes beam@sgiblab.sgi.com William Cox
>Even that's more expensive that buying some from the Shack mail order. The
>s/h is only $2, and the diodes are 1.09. I *think* they are part 900-1871
(I
>know it's 900, and I know it's 71). Do a search on the webpage.
>-William
>
>----- Original Message -----
>From: Richard Piotter
>To:
>Sent: Wednesday, March 15, 2000 12:02 AM
>Subject: Re: Photodiodes
>
>
>> I believe that the IR detector remote sensor modules at RadioShack use
>> photodiodes. It'll cost you $3-4 for them, and they must be torn apart,
>> but if you REALY want to avoid amil order, that should work. They are
>> Catalog Number 276-137, and if they aren't in stock, ask for their
>> catalog and show them what you need, and they usualy can get it with
>> their next restock.
>>
>> I just purchased some today, cause I plan on making an IR bump sensor
>> (without the bumps).
>>
>> I plan to use these for BEAMac and Quadrapod.
>>
>>
>> Daniel Grace wrote:
>> >
>> > I feel horrible mailing the list so much, but from
>> > what can photodiodes be salvaged from? I dispise mail
>> > order, and was really hoping I could get these from a
>> > local store (checked, and no such luck) or from some
>> > device (which is what I need your help for). I'd much
>> > rather drive through all the garage sales and salvage
>> > a lot of components from a small $2 thing than mail
>> > order it and pay more than it's worth in shipping and
>> > handling.
>> >
>> > ~Daniel
>> >
>> > =====
>> > ICQ # 39402143
>> >
>> > __________________________________________________
>> > Do You Yahoo!?
>> > Talk to your friends online with Yahoo! Messenger.
>> > http://im.yahoo.com
>>
>> --
>>
>>
>> Richard Piotter The Richfiles Robotics & TI web page:
>> richfile@rconnect.com http://richfiles.calc.org
>>
>> -- Make Money by Simply Surfing the Net or responding to E-Mail!!!
>> -- Click below!!!
>>
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